Upgrade to tzcode2013d.

Well, kinda... localtime.c still contains a bunch of Android-specific
hacks, as does strftime.c. But the other files are now exactly the same
as upstream.

This catches up with several years of bug fixes, and fixes most of the
compiler warnings that were in this code. (Just two remain.)

Bug: 1744909
Change-Id: I2ddfecb6fd408c847397c17afb0fff859e27feef
Add new optimized strlen for arm.

This optimized version is primarily targeted at cortex-a15.

Tested on all nexus devices using the system/extras/libc_test strlen test.
Tested alignments from 1 to 32 that are powers of 2.
Tested that strlen does not cross page boundaries at all alignments.

Speed improvements listed below:

cortex-a15
- Sizes >= 32 bytes, ~75% improvement.
- Sizes >= 1024 bytes, ~250% improvement.

cortex-a9
- Sizes >= 32 bytes, ~75% improvement.
- Sizes >= 1024 bytes, ~85% improvement.

krait
- Sizes >= 32 bytes, ~95% improvement.
- Sizes >= 1024 bytes, ~160% improvement.

Merge from internal master.

(cherry-picked from 2fc071797743b88a9a47427d46baed7c7b24f4d2)

Change-Id: I1ceceb4e745fd68e9d946f96d1d42e0cdaff6ccf

Conflicts:
	libc/arch-arm/generic/generic.mk
	libc/arch-arm/krait/krait.mk
Fix assembler errors in generic arm strlen.c.

Tested using a static version of the strlen libc_test program
on a nexus7 that uses the generic code.

Merge from internal master.

(cherry-picked from d8d10a8994472e40d19301b7087806630877b4d5)

Change-Id: I88f7dc01dc5b5c3ac2d5580d92153bc1bc36c564

Conflicts:
	libc/arch-arm/generic/bionic/strlen.c
Rewrite memset for cortexa15 to use strd.

Merge from internal master.

(cherry-picked from commit 7ffad9c120054eedebd5f56f8bed01144e93eafa)

Change-Id: Ia67f2a545399f4fa37b63d5634a3565e4f5482f9
Update to latest cortexa15 memcpy code.

This uses the new code original submitted as memcpy.a15.S as
the base. However, the old code handled unaligned src/dst better
so that was spliced in. I optimized the original unaligned code by
removing a few unnecessary instructions. I optimized the a15 code by
rewriting the pre and post code. I also modified the main loop to add
a pld so that larger copies would not stall waiting for memory.

Test cases for the new memcpy:

- Copy all sized values from 0 to 1024 bytes, using whatever alignment
  is returned by malloc.
For each alignment case described below, the test copied from 0 to 128
bytes.
- Src and dst pointers are both aligned to the same value, starting
  at one going through every power of two up to and including 128.
- Src aligned to double word boundary, dst aligned to word boundary.
- Src aligned to word boundary, dst aligned to double word boundary.
- Src aligned to 16 bit boundary, dst aligned to word boundary.
- Src aligned to word boundary, dst aligned to 16 byte boundary.
- Src aligned to word boundary, dst aligned to 1 byte from a word
  boundary.
- Src aligned to word boundary, dst aligned to 2 bytes from a word
  boundary.
- Src aligned to word boundary, dst aligned to 3 bytes from a word
  boundary.
- Src aligned to 1 byte from a word boundary, dst aligned to a word
  boundary.
- Src aligned to 2 bytes from a word boundary, dst aligned to a word
  boundary.
- Src aligned to 3 bytes from a word boundary, dst aligned to a word
  boundary.

Cases to verify the unaligned source code properly aligns to a 16 bit
boundary.
- Src aligned to 1 byte from a 128 bit boundary, dst aligned to
  4 + 128 bit boundary.
- Src aligned to 1 byte from a 128 bit boundary, dst aligned to
  8 + 128 bit boundary.
- Src aligned to 1 byte from a 128 bit boundary, dst aligned to
  12 + 128 bit boundary.
- Src aligned to 1 byte from a 128 bit boundary, dst aligned to
  16 + 128 bit boundary.

In all cases, a two byte fencepost was placed at the end of the
destination to verify that only the requested number of bytes were copied.

Bug: 8005082

Merge from internal master.

(cherry-picked from commit 21ede92d794969f22cacbdb9f557818f1c5712b5)

Change-Id: Ief70c9e6dc8c6473ae245b6570b2c266fed9618c
Add missing branch in memcpy.S dst aligned case.

Merge from internal master.

(cherry-picked from commit 6ffaa931c362602a2b606a610c92326a425a876e)

Change-Id: Ifdcf01fd122866cf0d4c5b5f7a997803561d7889
revert: use prior version of strcmp.s
Rename the tzdata update tool, and add HTTP support.

The FTP server is currently unavailable, but the HTTP server is working
fine.

Change-Id: If7f2f396e89aca022a60af531f3604523b7bf95c
libc: add timerfd calls

(cherry-pick of 04c0ac14a49e0969333008a9522b64046d58fbdc.)

Change-Id: I06d0b6c2a8781602362b81f48faf1cca76b9ec05